Every week a Guardian Money reader submits a question, and it’s up to you to help him or her out – a selection of the best answers will appear in next Saturday’s paper.

This week’s question:

We’re doing up our home and my partner is hooked on Farrow & Ball and Fired Earth paints – which cost up to £100 for a five-litre tin. I say we can “colour match” them at the local hardware store and save a fortune. But is cheap paint a false economy?

Do you have a problem readers could solve? Email your suggestions to money@theguardian.com or write to us at Money, The Guardian, Kings Place, 90 York Way, London N1 9GU